The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her
Lu, Hongpeng1,2; Zhang, Liyun1,2; Han, Xianming L.3; Pi, Qingfeng1,2; Wang, Daimei1,2; Zhang, LY
发表期刊NEW ASTRONOMY
2016-10-01
卷号48页码:58-65
DOI10.1016/j.newast.2016.04.006
收录类别SCI
关键词Stars:Binaries:Eclipsing Stars:Individual V1044 Her Stars Period Variation
摘要We present new CCD photometric observations of V1044 Her obtained on May 22, 23 and 24, 2015. From our data, we derived five new light curve minimum times. Combining our new results with previously available CCD light minimum times, we derived an updated ephemeris and discovered that the period of this binary system exhibits an oscillation. The cyclic variation may be caused by the light-time effect via the presence of a third body or magnetic activity cycle. We calculated the corresponding period of the third body to be 14.1 +/- 1.4 years or magnetic cycle to be 12.2 +/- 0.7 years. We analyzed our new asymmetric light curves to obtain photometric solutions and starspot parameters using the Wilson and Devinney program. The final results show that V1044 Her is a contact binary system with a degree of contact factor f = 3.220(+/- 0.002)%. (C) 2016 Elsevier B.V. All rights reserved.
项目资助者Joint Fund of Astronomy of the National Natural Science Foundation of China ; Chinese Academy of Sciences(U1431114, 11263001) ; Joint Fund of Department of Science and Technology of Guizhou Province ; Guizou University([2014]7642)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN1384-1076
URL查看原文
WOS记录号WOS:000377819100010
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CONTACT BINARY ; ORBITAL-PERIOD ; LIGHT-CURVE ; CLOSE BINARIES ; STAR LIGHT ; SYSTEM ; ANDROMEDAE ; CASSIOPEIAE ; MODULATION ; TAURI
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9612
专题中国科学院天体结构与演化重点实验室
通讯作者Zhang, LY
作者单位1.College of Science/Department of Physics & NAOC-GZU-Sponsored Center for Astronomy Research, Guizhou University, Guiyang 550025, PR China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, PR China
3.Department of Physics and Astronomy, Butler University, Indianapolis, IN 46208, USA
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Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,et al. The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her[J]. NEW ASTRONOMY,2016,48:58-65.
APA Lu, Hongpeng,Zhang, Liyun,Han, Xianming L.,Pi, Qingfeng,Wang, Daimei,&Zhang, LY.(2016).The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her.NEW ASTRONOMY,48,58-65.
MLA Lu, Hongpeng,et al."The multi-band CCD photometric investigation of short-period eclipsing binary V1044 Her".NEW ASTRONOMY 48(2016):58-65.
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